Polysiloxane-containing halogen-free environment-friendly flame-retardant polyolefin cable material and preparation method thereof

A polyolefin cable material and polysiloxane technology, applied in the direction of insulating cables, cables, circuits, etc., can solve the problems of poor compatibility, change the temperature resistance level of polymers, reduce the mechanical properties and processing properties of cable materials, and achieve Effects of increased fluidity, reduced torque, and excellent applicable temperature range

Inactive Publication Date: 2013-08-14
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional addition of inorganic flame retardants such as aluminum hydroxide and magnesium hydroxide can endow polymers with good flame retardant properties, but due to the poor compatibility between inorganic substances and organic polymers, it often reduces the performance of cable materials. The mechanical properties and processing properties of the polymer may also change the temperature resistance level of the polymer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A low-smoke halogen-free flame-retardant polyolefin cable compound, the raw material formula of which is as follows:

[0025] raw material parts by weight EVA 55 LDPE 40 Aromatic polysiloxane 30 tricresyl phosphate 15 Antioxidant 1010 1.5 Antioxidant BPS 2.0 Benzotriazole 0.1 Zinc stearate 3.1

[0026] The preparation method of above-mentioned cable material, it comprises the following processing steps:

[0027] According to the total weight of 40 kg, put EVA and LDPE into the high-speed mixer, then put in polysiloxane, and then put in all other additives, stir at low speed for 10 minutes at room temperature until the raw materials are mixed evenly, and the mixed materials are put down To Biao screw feeding tank. Through twin-screw granulation, the temperature is as follows:

[0028] Feeding section Conveyor section Melting section nose 125℃ 135℃ 145℃ 150℃

[0029] After hot-c...

Embodiment 2

[0032] A low-smoke halogen-free flame-retardant polyolefin cable compound, the raw material formula of which is as follows:

[0033] raw material parts by weight EVA 65 LDPE 35 macrocyclic polysiloxane 20 polymetaphosphoric acid 10 Antioxidant l68 1.5 Antioxidant DSTP 2.3 3-amino1,2,4-triazole 0.1 PE wax 3.8

[0034] The preparation method of the above-mentioned cable material is the same as that of Example 1, and a performance testing test is carried out, and the results are shown in Table 1.

Embodiment 3

[0036] A low-smoke halogen-free flame-retardant polyolefin cable compound, the raw material formula of which is as follows:

[0037] raw material parts by weight EVA 60 LDPE 45 hyperbranched polysiloxane 15 ammonium phosphate 15 Antioxidant l010 1.5 Antioxidant DSTP 2.2 salicylidene ethylenediamine 0.1 paraffin 4.6

[0038] The preparation methods of the above-mentioned cable materials are the same as in Example 1, and a performance testing test is performed, and the results are shown in Table 1.

[0039] Table 1:

[0040] performance unit Example 1 Example 2 Example 3 density g / mL 1.29 1.31 1.24 Tensile Strength MPa 11.9 12.4 11.6 elongation at break % 421 367 380 Aging performance ℃×h 175×200 175×200 175×210 Oxygen Index % 43 39.2 38 Smoke density (with flame) 49 61 58 Smoke density (flameless) 109 126 119 Com...

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PUM

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Abstract

The invention relates to a polysiloxane-containing halogen-free environment-friendly flame-retardant polyolefin cable material and a preparation method thereof. In the invention, organic polysiloxane is used as a main flame retardant, a polyolefin base material can be endowed with excellent flame retarding property through silicon atoms in a main chain, and no toxic gas is generated, thus being green and environment-friendly; simultaneously, the organic chain on a side chain endows good compatibility with polyolefin, and further endows the polyolefin base material with excellent mechanical performance and machinability. Organic siloxane endows the polyolefin base material with good insulativity, flexibility, low temperature resistance performance and the like, thus, organic polysiloxane can be used for preparing a novel halogen-free environment-friendly flame-retardant polyolefin cable material. The cable material can be adapt to both north and south climates and interior and exteriortemperatures, and is especially applicable to mobile lines and flexible connection systems.

Description

technical field [0001] The invention belongs to the field of polymer materials and relates to polymer cable materials, in particular to a polysiloxane-containing halogen-free and environmentally friendly flame-retardant polyolefin cable material and a preparation method thereof. Background technique [0002] Wires and cables play an important role in power transmission and signal transmission, and are widely used. With the development of science and technology and the progress of society, the smoke produced by the burning of PVC and halogen-containing flame retardant cables is harmful to the human body, causing many people to suffocate and die in the fire, and the precision equipment is paralyzed. Halogen-containing cables will be phased out gradually. Therefore, it is of great significance to design and manufacture cables that are harmless to humans, environmentally friendly, and have excellent flame retardancy and insulation properties. [0003] The traditional addition ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/18C08K5/3475C08K3/32C08L23/06C08L83/04B29B9/06C08K5/523C08L23/08B29C47/92C08L31/04H01B7/295C08K13/02B29C48/92
CPCB29C48/0022B29C48/40
Inventor 袁伟忠郭文
Owner TONGJI UNIV
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